a(n)=(# 3's)-(# 4's) in first n terms of A030604.

Terms

a(0) =0a(1) =0a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =2a(9) =3a(10) =3a(11) =2a(12) =2a(13) =3a(14) =3a(15) =3a(16) =3a(17) =3a(18) =2a(19) =2a(20) =2a(21) =2a(22) =2a(23) =2a(24) =2a(25) =2a(26) =1a(27) =1a(28) =1a(29) =1